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Hi, I am using different AR tags and need to know how I can save their poses into a text file so I can use their poses in a MATLAB code. When I use "echo", it gives me a long list with different markers_id and the poses are not fixed. Any suggestion? Thanks
@ggregory8 is absolutely right with using rosbag.
I also want to mention the solution with plain rosbag.
Record your data with
rosbag record /topic
And then process it in Matlab with the matlab_rosbag package.
Hi,
You can echo straight into a file using:
rostopic echo /topic > filename.txt
But this isn't ideal as it will be the same format as the echo displays it to the commandline.
A better way is to record topics using rosbag and then you can write the topic data you want straight to a file using:
rostopic echo -b file.bag -p /topic > filename.txt
This has the benefit of formatting the data suitable for a csv file, which you can then manipulate with excel / matlab.
Asked: 2014-04-06 18:11:42 -0500
Seen: 901 times
Last updated: May 27 '14
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